Device Tests
Touch Screen Test
Touch Screen Test is part of Toolspire and is ready as soon as this page loads. Put a finger on each corner and the centre. Every contact shows as a dot, two fingers report a pinch distance, and the highest number of simultaneous touches is kept.
On this page
What you can do here
Live fingers
Each contact is a dot that follows your finger, including a second and a third.
Corner targets
Dead zones often sit in the corners. The four circles plus the centre make those zones obvious.
Pinch distance
Two fingers report how far apart they are, which is the raw input a pinch gesture uses.
A running maximum
Lift and press again with more fingers. The “at once” number stays at the highest count.
The sequence
How to test a touch screen
- 1
Open the page on the device
A phone or tablet is the real test. A computer can still click the targets with a mouse.
- 2
Hit the five circles
Touch each corner and the centre. A circle that never turns solid is a dead zone.
- 3
Put two fingers down
You should see two dots and a pinch distance. Add fingers until the count stops rising — that is the screen’s limit.
- 4
Drag along an edge
A dot that jumps or vanishes as you slide is a scratch or a failing digitizer.
Worth knowing
- Touch Screen Test on Toolspire: draws a dot for every finger the browser reports, and shows how many are down at once.
- Five targets — four corners and the centre — turn solid when a touch lands on them.
- With two fingers down, the page shows the distance between them in pixels.
- Remembers the most fingers at once, so you can see whether the screen’s multi-touch limit is 2, 5 or 10.
- Touch points stay in the tab. They are not stored and not uploaded. A mouse can click the targets on a computer.
A spot the finger cannot hit
- A screen protector — a lifted corner or a thick glass edge creates a dead band. Peel it back and try the same spot.
- A case — some cases cover the extreme edge. Take the case off before deciding the panel is faulty.
- Water or oil — dry the glass. A wet patch can spawn extra touches or swallow a real one.
- The browser — in-app browsers sometimes mishandle multi-touch. Open the page in Safari or Chrome and try again.
How many touches should a phone report?
Most phones sold in the last decade report at least five simultaneous touches, and many report ten. Two is enough for a pinch. If a modern phone never goes past one finger here, and it also fails in the Maps app, the digitizer — not the site — is the limit.
FAQ
Questions about Touch Screen Test
Where does Touch Screen Test run?
How do I test multi-touch?
Why do the corners matter?
Can I use this on a laptop touchpad?
The page scrolls instead of drawing a dot.
Are touches uploaded?
Keep going
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